Cobalt 2006-2008, G5 2007

2.4L L4 VIN B Auto 7

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Trouble Code: P0662



Engine Controls Ignition Relay Control Circuit

Possible Causes:



Powertrain relay shorted to ground on the control circuit
 
Powertrain relay shorted to voltage or an open/high resistance
 
Powertrain relay has failed
 
ECM has failed
 

Trouble Code: P0685



Engine Controls Ignition Relay Control Circuit

Possible Causes:



This test procedure assumes that the vehicle battery has passed a load test and is completely charged. Refer to Battery Inspection/Test .
 
When disconnecting electrical connectors or removing fuses and relays from a fuse block, always inspect the component electrical terminals for corrosion and the mating electrical terminals for correct tension.
 

Trouble Code: P0686



Engine Controls Ignition Relay Control Circuit High Voltage

Possible Causes:



Powertrain relay shorted to ground on the control circuit
 
Powertrain relay shorted to voltage or an open/high resistance
 
Powertrain relay has failed
 
ECM has failed
 

Trouble Code: P0687



Engine Controls Relay Feedback Circuit Low Voltage

Possible Causes:



Powertrain relay shorted to ground on the control circuit
 
Powertrain relay shorted to voltage or an open/high resistance
 
Powertrain relay has failed
 
ECM has failed
 

Trouble Code: P0689



Engine Controls Ignition Relay Feedback Circuit Low Voltage

Possible Causes:



This test procedure assumes that the vehicle battery has passed a load test and is completely charged. Refer to Battery Inspection/Test .
 
When disconnecting electrical connectors or removing fuses and relays from a fuse block, always inspect the component electrical terminals for corrosion and the mating electrical terminals for correct tension.
 

Trouble Code: P0689



Engine Controls Ignition Relay De-energized Too Late

Possible Causes:



Powertrain relay shorted to ground on the control circuit
 
Powertrain relay shorted to voltage or an open/high resistance
 
Powertrain relay has failed
 
ECM has failed
 

Trouble Code: P068B



Engine Controls Relay Feedback Circuit High Voltage

Possible Causes:



Powertrain relay shorted to ground on the control circuit
 
Powertrain relay shorted to voltage or an open/high resistance
 
Powertrain relay has failed
 
ECM has failed
 

Trouble Code: P0690



Engine Controls Ignition Relay Feedback Circuit High Voltage

Possible Causes:



This test procedure assumes that the vehicle battery has passed a load test and is completely charged. Refer to Battery Inspection/Test .
 
When disconnecting electrical connectors or removing fuses and relays from a fuse block, always inspect the component electrical terminals for corrosion and the mating electrical terminals for correct tension.
 

Trouble Code: P06A6



Transmission Control Module (TCM) Requested MIL Illumination

Possible Causes:



MIL control circuit is shorted to ground
 
Check the TCM for any trouble codes in memory that are responsible for the request to turn on the MIL
 
TCM has failed
 

Trouble Code: P0700



Transmission Control Module (TCM) Requested MIL Illumination

Possible Causes:



DTC P0700 can not be cleared from the ECM until the related TCM codes have been cleared.
 

Trouble Code: P0700



Clutch Switch Circuit Malfunction (M49/MM6)

Possible Causes:



Clutch switch circuit is open, shorted to ground or to power
 
Clutch switch power circuit is open (test the ENG IGN fuse)
 
Clutch switch is out of adjustment, damaged or has failed
 
ECM has failed
 

Trouble Code: P0705



Transmission Range (TR) Switch Circuit

Trouble Code: P0711



Transmission Fluid Temperature (TFT) Sensor Performance

Trouble Code: P0712



Transmission Fluid Temperature (TFT) Sensor Circuit Low Voltage

Trouble Code: P0713



Transmission Fluid Temperature (TFT) Sensor Circuit High Voltage

Trouble Code: P0716



Input Speed Sensor Performance

Possible Causes:



Ensure the wiring harness is not stretched too tightly or other components are pressing on the connector body. Also, inspect for proper clearance to any other components and wiring. Refer to Testing for Intermittent Conditions and Poor Connections .
 

Trouble Code: P0717



Input Speed Sensor Circuit Low Voltage

Possible Causes:



Ensure the wiring harness is not stretched too tightly or other components are pressing on the connector body. Also, inspect for proper clearance to any other components and wiring. Refer to Testing for Intermittent Conditions and Poor Connections .
 

Trouble Code: P0719



Brake Switch Circuit Low Voltage

Possible Causes:



In order to avoid a misdiagnosis, inspect for proper adjustment of the cruise control release switch. Refer to Cruise Release Switch Adjustment . For an intermittent condition, refer to Testing for Intermittent Conditions and Poor Connections in Wiring Systems.
 

Trouble Code: P0719



Brake Switch Circuit Low Voltage

Trouble Code: P0719



Brake Switch Circuit Low Voltage

Possible Causes:



In order to avoid a misdiagnosis, inspect for proper adjustment of the cruise control release switch. Refer to Cruise Release Switch Adjustment . For an intermittent condition, refer to Testing for Intermittent Conditions and Poor Connections .
 

Trouble Code: P0722



Output Speed Sensor Circuit Low Voltage

Trouble Code: P0723



Output Speed Sensor Circuit Intermittent

Trouble Code: P0724



Brake Switch Circuit High Voltage

Possible Causes:



In order to avoid a misdiagnosis, inspect for proper adjustment of the cruise control release switch. Refer to Cruise Release Switch Adjustment . For an intermittent condition, refer to Testing for Intermittent Conditions and Poor Connections in Wiring Systems.
 

Trouble Code: P0724



Brake Switch Circuit High Voltage

Trouble Code: P0724



Brake Switch Circuit High Voltage

Possible Causes:



In order to avoid a misdiagnosis, inspect for proper adjustment of the cruise control release switch. Refer to Cruise Release Switch Adjustment . For an intermittent condition, refer to Testing for Intermittent Conditions and Poor Connections .
 

Trouble Code: P0741



Torque Converter Clutch (TCC) System - Stuck Off

Possible Causes:



Inspect the transmission fluid level.
 
The transmission may be in hot mode. Inspect the transmission fluid lines to the radiator. The lines may be pinched, plugged or twisted.
 

Trouble Code: P0741



Torque Converter Clutch (TCC) System - Stuck Off

Possible Causes:



Inspect the transmission fluid level.
 
The transmission may be in hot mode. Inspect the transmission fluid lines to the radiator. The lines may be pinched, plugged or twisted.
 
It is possible for an internal TCM failure which may not allow sufficient current to operate the solenoids. Verify TCM functionality by commanding the suspected solenoid ON/OFF using the scan tool and listen for a click.
 

Trouble Code: P0742



Torque Converter Clutch (TCC) System - Stuck On

Possible Causes:



Rapid fluctuation in line pressure could set DTC P0742.
 
Inspect for a pressure regulator condition.
 
Inspect for abnormal high or low line pressure.
 
Inspect the connections at the TCM, the TFP manual valve position switch and all other circuit connecting points for an intermittent condition. Refer to Testing for Intermittent Conditions and Poor Connections .
 
Inspect the circuit wiring for an intermittent condition. Refer to Testing for Electrical Intermittents .
 
The customer may notice an engine stalling condition.
 

Trouble Code: P0742



Torque Converter Clutch (TCC) System - Stuck On

Possible Causes:



Rapid fluctuation in line pressure could set DTC P0742.
 
Inspect for a pressure regulator condition.
 
Inspect for abnormal high or low line pressure.
 
Inspect the connections at the TCM, the TFP manual valve position switch and all other circuit connecting points for an intermittent condition. Refer to Testing for Intermittent Conditions and Poor Connections .
 
Inspect the circuit wiring for an intermittent condition. Refer to Testing for Electrical Intermittents .
 
The customer may notice an engine stalling condition.
 
It is possible for an internal TCM failure which may not allow sufficient current to operate the solenoids. Verify TCM functionality by commanding the suspected solenoid ON/OFF using the scan tool and listen for a click.
 

Trouble Code: P0751



1-2 Shift Solenoid Valve Performance - No First or Fourth Gear

Possible Causes:



If you clear DTC P0751, and then cannot set DTC P0751 again, inspect for the following conditions:

Fluid contamination
 
Plugged fluid circuits
 
Restricted fluid circuits
 

Refer to Shift Solenoid Valve State and Gear Ratio .
 

Trouble Code: P0751



1-2 Shift Solenoid Valve Performance - No First or Fourth Gear

Possible Causes:



If you clear DTC P0751, and then cannot set DTC P0751 again, inspect for the following conditions:

Fluid contamination
 
Plugged fluid circuits
 
Restricted fluid circuits
 

Refer to Shift Solenoid Valve State and Gear Ratio .It is possible for an internal TCM failure which may not allow sufficient current to operate the solenoids. Verify TCM functionality by commanding the suspected solenoid ON/OFF using the scan tool and listen for a click.
 

Trouble Code: P0752



1-2 Shift Solenoid Valve Performance - No Second or Third Gear

Possible Causes:



If you clear DTC P0752, and then cannot set DTC P0752 again, inspect for the following conditions:

Fluid contamination
 
Plugged fluid circuits
 
Restricted fluid circuits
 

Refer to Shift Solenoid Valve State and Gear Ratio .
 

Trouble Code: P0752



1-2 Shift Solenoid Valve Performance - No Second or Third Gear

Possible Causes:



If you clear DTC P0752, and then cannot set DTC P0752 again, inspect for the following conditions:

Fluid contamination
 
Plugged fluid circuits
 
Restricted fluid circuits
 

Refer to Shift Solenoid Valve State and Gear Ratio .It is possible for an internal TCM failure which may not allow sufficient current to operate the solenoids. Verify TCM functionality by commanding the suspected solenoid ON/OFF using the scan tool and listen for a click.
 

Trouble Code: P0756



2-3 Shift Solenoid Valve Performance - No First or Second Gear

Possible Causes:



If you clear DTC P0756, and then cannot set DTC P0756 again, inspect for the following conditions:

Fluid contamination
 
Plugged fluid circuits
 
Restricted fluid circuits
 

Refer to Shift Solenoid Valve State and Gear Ratio .
 

Trouble Code: P0756



2-3 Shift Solenoid Valve Performance - No First or Second Gear

Possible Causes:



If you clear DTC P0756, and then cannot set DTC P0756 again, inspect for the following conditions:

Fluid contamination
 
Plugged fluid circuits
 
Restricted fluid circuits
 

Refer to Shift Solenoid Valve State and Gear Ratio .It is possible for an internal TCM failure which may not allow sufficient current to operate the solenoids. Verify TCM functionality by commanding the suspected solenoid ON/OFF using the scan tool and listen for a click.
 

Trouble Code: P0757



2-3 Shift Solenoid Valve Performance - No Third or Fourth Gear

Possible Causes:



If you clear DTC P0757, and then cannot set DTC P0757 again, inspect for the following conditions:

Fluid contamination
 
Plugged fluid circuits
 
Restricted fluid circuits
 

Refer to Shift Solenoid Valve State and Gear Ratio .
 

Trouble Code: P0757



2-3 Shift Solenoid Valve Performance - No Third or Fourth Gear

Possible Causes:



If you clear DTC P0757, and then cannot set DTC P0757 again, inspect for the following conditions:

Fluid contamination
 
Plugged fluid circuits
 
Restricted fluid circuits
 

Refer to Shift Solenoid Valve State and Gear Ratio .It is possible for an internal TCM failure which may not allow sufficient current to operate the solenoids. Verify TCM functionality by commanding the suspected solenoid ON/OFF using the scan tool and listen for a click.
 

Trouble Code: P0833



Clutch Pedal Switch 2 Circuit

Trouble Code: P0842



Transmission Fluid Pressure (TFP) Sensor Circuit Low Voltage

Possible Causes:



Ensure the wiring harness is not stretched too tightly or other components are pressing on the connector body. Also, inspect for proper clearance to any other components and wiring. Refer to Testing for Intermittent Conditions and Poor Connections .
 

Trouble Code: P0843



Transmission Fluid Pressure (TFP) Sensor Circuit High Voltage

Possible Causes:



Ensure the wiring harness is not stretched too tightly or other components are pressing on the connector body. Also, inspect for proper clearance to any other components and wiring. Refer to Testing for Intermittent Conditions and Poor Connections .
 

 
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